Page 247 - Electromechanical Devices and Components Illustrated Sourcebook
P. 247
Chapter 11 Acoustic Devices 209
Ringer
Ringer
Battery
Indicator Lamp
Relay
Circuit Jack
Circuit Plug
Operator's Plug
Operator's
Headset
Coupling
Transformer
Magneto with
Automatic Ringer Switch
Battery
Figure 11-57 Simplified Operator’s Switch Board Schematic
Coupling Transformer
Case
Transmitter Condenser
Circuit Jack
Hook
Switch
Receiver Ringer
Magneto
Circuit Plug Crank
Battery
Terminals
Headset Jack Condenser
Jack
Figure 11-58 Ten-Channel Portable Switch Board Figure 11-59 Subscriber’s Telephone Station
